Washington - The Digital Media Association (DiMA), which represents the interests of large webcasters including AOL, Microsoft and Yahoo, has hired Greg Barnes, former senior counsel to House Judiciary Committee Chairman John Conyers, to become the association's legislative counsel and director of government affairs. "We look forward to having Greg on board as we continue to help digital media companies achieve a regulatory and business environment that supports industry growth, creative and technological innovation and greater consumer enjoyment of digital content," DiMA executive director Jonathan Potter.